'''Chicago Transit Authority''', also known as '''CTA''', is the operator of public transport|mass transit
within the Chicago|City of Chicago
and some of its surrounding suburbs
, including the trains of the Chicago 'L'
and CTA bus service.
The CTA is an Illinois Government agency|independent governmental agency
that started operations on October 1, 1947 upon the purchase and combination of the transportation assets of the Chicago Rapid Transit Company
and the Chicago Surface Lines
streetcar system. In 1952, CTA purchased the assets of the Chicago Motor Coach Company
, which was under the control of Yellow Cab Company
founder John D. Hertz
, resulting in a fully unified system. Today, the CTA is one of the three service boards financially supported by the Regional Transportation Authority (Illinois)|Regional Transportation Authority